Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Patent
1986-02-10
1988-04-26
Levy, Stewart J.
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
324309, G01R 3320
Patent
active
047407506
ABSTRACT:
Reception signal processing apparatus in nuclear magnetic resonance diagnostic apparatus to display as an image the distribution of the spin density or relaxation time of specific atomic nuclei existing in an object utilizing nuclear magnetic resonance phenomena including a phase demodulator for phase demodulating a nuclear magnetic resonance signal evoked by nuclear magnetic resonance phenomena in accordance with two reference waves, the phases of which are different by 90.degree., an analog-to-digital convertor for digitalizing the separated two signals obtained by the phase demodulator, and a noise correction processor for eliminating the low frequency component noises included in the demodulated signals from the phase demodulator to obtain an image without artifacts.
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Levy Stewart J.
Oldham Scott M.
Tokyo Shibaura Denki Kabushiki Kaisha
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